fax (n.)

1948, in reference to the technology, short for facsimile (telegraphy). Meaning "a facsimile transmission" is by 1980. The verb attested by 1970. Related: Faxed; faxing.

Futurists predict that a "fax" terminal in the house or business office may someday complement or even replace the mail-carrier. [Scientific American, 1972]